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发表于 2006-3-5 13:35:36
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我的系统上:- [matt@localhost ~]$ usleep
- [matt@localhost ~]$ whereis usleep
- usleep: /bin/usleep /usr/share/man/man3/usleep.3.gz /usr/share/man/man3p/usleep.3p.gz /usr/share/man/man1/usleep.1.gz
- [matt@localhost ~]$ rpm -qf /bin/usleep
- initscripts-8.11.1-1
- [matt@localhost ~]$ man usleep
- [matt@localhost ~]$ man usleep |cat
- USLEEP(1) USLEEP(1)
- NAME
- usleep - sleep some number of microseconds
- SYNOPSIS
- usleep [number]
- DESCRIPTION
- usleep sleeps some number of microseconds. The default is 1.
- OPTIONS
- --usage Show short usage message.
- --help, -?
- Print help information.
- -v, --version
- Print version information.
- BUGS
- Probably not accurate on many machines down to the microsecond. Count
- on precision only to -4 or maybe -5.
- AUTHOR
- Donald Barnes <djb@redhat.com>
- Erik Troan <ewt@redhat.com>
- Red Hat, Inc USLEEP(1)
- [matt@localhost ~]$
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